Status

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For bugs in Firefox Desktop, the Mozilla Foundation's web browser. For Firefox user interface issues in menus, bookmarks, location bar, and preferences. Many Firefox bugs will either be filed here or in the Core product. Bugs for developer tools (F12) should be filed in the DevTools product. (more info)

Security

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User Story

Build ID
Nightly: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0a1) Gecko/20111002 Firefox/10.0a1
Steps to reproduce:
1. Launch Firefox on a clean profile and have only one tab available
2. Maximize the browser window and grab and drag the tab out of the tab strip
3. Without dropping the tab hit the F11 key to go fullscreen
4. When the animation to go fullscreen is visible, release the tab
Expected results:
In step 4 the fullscreen browser window with on tab should be visible
Actual results:
In step 4 the browser windows looses it's edges and only the content is displayed.
*Notes:
-> I encountered this issue with the current implementation of the Tab Animation Feature on NIGHTLY ONLY; it's not visible on the current aurora (9) or beta (8)
-> Here is a link to a screen video of the issue: https://skydrive.live.com/?cid=bc75b2c6fced798f&id=BC75B2C6FCED798F%21352#cid=BC75B2C6FCED798F&id=BC75B2C6FCED798F%21353

I did some tests on other platforms and the issue is visible there as well in similar ways:
-> on Mac, in step 4 when releasing the mouse key the tab is not dropped
-> on Ubuntu, in step 4 when releasing the mouse key, the browser window is cut at the right margin
Mozilla/5.0 (X11; Linux x86_64; rv:10.0a1) Gecko/20111003 Firefox/10.0a1
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:10.0a1) Gecko/20110929 Firefox/10.0a1